H01F 41/08
Winding conductors onto closed formers or cores
Official title: Winding conductors onto closed formers or cores, e.g. threading conductors through toroidal cores
H01F41/08 (Winding conductors onto closed formers or cores) appears on 179 US grants and 144 published applications in this corpus.
Search patents in H01F- Granted patents
- 179
- Published applications
- 144
- Assignees
- 117
- Inventors
- 399
- Latest grant
- 28 Apr 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 8 | 0 |
| 1977 | 2 | 0 |
| 1978 | 5 | 0 |
| 1979 | 0 | 0 |
| 1980 | 1 | 0 |
| 1981 | 3 | 0 |
| 1982 | 1 | 0 |
| 1983 | 2 | 0 |
| 1984 | 3 | 0 |
| 1985 | 7 | 0 |
| 1986 | 4 | 0 |
| 1987 | 8 | 0 |
| 1988 | 9 | 0 |
| 1989 | 5 | 0 |
| 1990 | 4 | 0 |
| 1991 | 1 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 6 | 0 |
| 1995 | 2 | 0 |
| 1996 | 4 | 0 |
| 1997 | 2 | 0 |
| 1998 | 1 | 0 |
| 1999 | 2 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 1 | 4 |
| 2003 | 3 | 4 |
| 2004 | 3 | 5 |
| 2005 | 4 | 8 |
| 2006 | 6 | 5 |
| 2007 | 6 | 6 |
| 2008 | 3 | 3 |
| 2009 | 1 | 5 |
| 2010 | 3 | 4 |
| 2011 | 4 | 2 |
| 2012 | 2 | 3 |
| 2013 | 0 | 2 |
| 2014 | 2 | 1 |
| 2015 | 0 | 10 |
| 2016 | 2 | 5 |
| 2017 | 2 | 11 |
| 2018 | 8 | 13 |
| 2019 | 9 | 10 |
| 2020 | 10 | 5 |
| 2021 | 5 | 8 |
| 2022 | 5 | 8 |
| 2023 | 3 | 6 |
| 2024 | 9 | 11 |
| 2025 | 6 | 3 |
| 2026 | 2 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Method for producing an inductor28 Apr 2026US 12,614,664 B2Vacon Oy
- Embedded inductance structure and manufacturing method thereof13 Jan 2026US 12,525,394 B2Zhuhai YUEXIN Semiconductor Limited Liability Company
- Inductor component and method for manufacturing same30 Sep 2025US 12,431,273 B2Murata Manufacturing Co., Ltd.
- AC drive coupled to zigzag transformer power processing apparatus and method of use thereof23 Sep 2025US 12,424,378 B2
- Fabrication of an integrated transformer19 Aug 2025US 12,394,565 B2Taiwan Semiconductor Manufacturing Company.Ltd
- Electrical component and method for manufacturing such an electrical component23 Jul 2026US 2026/0211005 A1Schneider Electric Industries SAS
- Winding machine having a positionable reel25 Jun 2026US 2026/0176100 A1Bf S.R.L.
- Casting type power inductor and preparation method therefor18 Dec 2025US 2025/0385042 A1Hengdian Group Dmegc Magnetics Co., Ltd
- Integrated transformer16 Oct 2025US 2025/0322990 A1Taiwan Semiconductor Manufacturing Company.Ltd
- Layered process-constructed double-winding embedded solenoid inductor22 May 2025US 2025/0166881 A1Cirrus Logic International Semiconductor Ltd.
Most cited
By later US patents
- Fluid motor driven propeller-aircraft for vertical take off and landing with a multipurpose pipe structure35US 4,387,866 A1983
- Inductor core-coil assembly and manufacturing thereof30US 6,512,438 B1Honeywell International Inc. · 2003
- Magnetic core winding method, apparatus, and product produced therefrom30US 7,154,368 B2Actown Electricoil, Inc. · 2006
- Slot core transformers28US 6,796,017 B2M-Flex Multi-Fineline Electronix, Inc. · 2004
- Method for winding ring-shaped articles26US 3,985,310 APulse Engineering, Inc. · 1976